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1 October 2013 Immune Response to Newcastle Disease Virus Vaccination in a Wild Passerine
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We studied the immune response of wild House Sparrows (Passer domesticus) experimentally challenged with different doses of inactivated Newcastle disease virus (NDV) vaccine. We evaluated within-individual cell-mediated and humoral responses in birds kept in outdoor aviaries, over a 6-wk period. Nonbreeding adult House Sparrows developed a significant humoral response to NDV experimental vaccination within 1 wk postchallenge, as measured by hemagglutination inhibition assay; values increased until week 4 and persisted until week 6. Differences among treatments appeared by week 1, with individuals challenged with the highest dose (0.2 mL) eliciting a higher humoral response than the rest (n = 18). By week 4, all individuals vaccinated displayed an increased humoral response, with individuals challenged with the highest dose remaining significantly above responses of individuals vaccinated with the middle dose (0.1 mL, n = 14), but not the lowest dose (0.05 mL, n = 15). The middle and lowest dose responded similarly and significantly different from controls (n = 23). Differences persisted through week 6 postchallenge. Cell-mediated responses were independent of the experimental treatment. All individuals experienced a rise in granulocyte concentration, whereas lymphocyte and monocyte concentrations decreased, most likely as a result of captivity. Adult wild House Sparrows immunochallenged with inactivated NDV vaccine developed a specific humoral response, highlighting the utility of this technique in immunologic and evolutionary ecology studies in wild birds.

Wildlife Disease Association 2013
Juli Broggi, Olaya García, Francisco Miranda, Albert Pagès, Ramón C. Soriguer, and Jordi Figuerola "Immune Response to Newcastle Disease Virus Vaccination in a Wild Passerine," Journal of Wildlife Diseases 49(4), 1004-1008, (1 October 2013).
Received: 26 October 2012; Accepted: 1 March 2013; Published: 1 October 2013

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